Doctor insights on:
Why Do Bed Bug Bites Itch So Much

1

See below:
Most insect which draw a blood meal though a bite will cause a local reaction with redness, swelling, warmth and itch. It is often impossible to tell these apart, but bedbugs will often leave a straight line or repeat bites whereas other bugs like mosquitos, fleas, etc. May look scattered. After scratching, the area may scab over and ooze, especially if it becomes secondarily infected.
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Insect bites are from mosquitos, spiders, flies, ticks, and other species that use their mandibles (jaws) to attach to a person or other animal. They can then suck blood out of their "prey" and leave saliva proteins that cause itching and swelling. Other insect species, like bees, yellow jackets, wasps, hornets and fire ants actually inject venom into their prey and can not only cause localized pain and swelling, but severe, acute allergic reactions in persons who are allergic.
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2

Inflammation:
Chemicals from the bite irritate the skin and blood vessels and cause an irritation ti the nerve fibers causing swelling het and possible hemorrhage in the skin. Bites can also become infected.
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3

Bed bug bites may:
Cause no sx's/signs in some except for 2 small points where skin was punctured by bedbug. When there's a reaction, it may show from an hour to several days after bite. It can cause itchy, pink, swollen, lesions w clear center. In cases of hypersensitivity blisters may develop. A telltale sign is linear track of lesions from sequential feedings – but that doesn't always occur. Bites are usually>.
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4

See below:
Most insect which draw a blood meal though a bite will cause a local reaction with redness, swelling, warmth and itch. It is often impossible to tell these apart, but bedbugs will often leave a straight line or repeat bites whereas other bugs like mosquitos, fleas, etc. May look scattered. Spiders often leave a pair of small puncture wound in the center of the area of the bite-this is a diff.
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7

No -Bed bug bites:
may have no sx's/signs except for 2 small skin puncture points. A reaction may show from 1 hr to several days later. It can cause itchy, pink, swollen, lesions w clear center. If hypersensitive blisters may occur. Telltale sign is linear track of lesions from sequential feedings – doesn't always occur. Bites are in areas exposed while sleeping-arms, shoulders, neck & legs.
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9

Bed bug bites may:
Have no sx's/signs except for 2 small skin puncture points. A reaction may show from an hr to several days later. It can cause itchy, pink, swollen, lesions w clear center. If hypersensite blisters may occur. A telltale sign is linear track of lesions from sequential feedings – but doesn't always occur. Bites are in areas exposed while sleeping-arms, shoulders, neck ; legs. The bite is usually >.
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10

Mosquito bites:
Store aloe vera gel in refrigerator ; apply to affected area. Rub basil leaf on bite. It repels mosquitoes ; has anti-inflammatory properties. You can mix 2 parts baking soda w 1 part water. Stir into paste ; place it over the mosquito bite. Can use calamine lotion. If you have problems w generalized welts, swelling of tongue, lips, airway - you should get urgent medical care.
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12

Mosquito bites:
Store aloe vera gel in refrigerator & apply to affected area. Rub basil leaf on bite. It repels mosquitoes & has anti-inflammatory effect. Consider applying calamine lotion or crushed ice or a cold pack. A 1 to 1 mix of water & baking soda is effective when applied to lesions. You can take oral medications like Benadryl (diphenhydramine) or Chlorpheniramine for itching.
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13

Bug bites:
Any allergic reaction to a bug bite can itch however, spider bites, and deer fly are less likely to cause an allergic reaction than fire ants, mosquitos, or chiggers. Some 'bites' are not really bites at all, but rather the discomfort comes from a sting such as: fire ants, bees wasps and scorpions.
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14

It is possible but:
Can appear different then this description. Bed bug bites may cause no symptoms or signs in some people. When there is a reaction, it may not show until several days after the bed bug has bitten. It can cause pink, swollen, itchy lesions on the skin. What can be telltale is when there is a linear track of lesions from sequential feedings – but that does not always occur.
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20

Bed bug bites:
Bed bug bites may cause no symptoms or signs in some people. When there is a reaction, it may not show until several days after the bed bug has bitten. It can cause pink, swollen, itchy lesions on the skin. What can be telltale is when there is a linear track of lesions from sequential feedings – but that does not always occur. If infected it may become warm, w ^ swelling, redness & pus.
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Bed bugs are wingless blood-sucking insects that can be transported on clothing, luggage, second-hand furniture, and public transportation. Getting bit by a bed bug can result in skin rashes, psychological effects, and allergic symptoms.
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